1. Celebrities are famous for reasons unrelated to wine. An ability to sing or perform or drive a car very fast has nothing to do with an ability to turn grapes into wine. Have you ever watched a great actor in a play, listened to a talented singer or watched a basketball player race down the court and thought, “I wonder what that person could do with Pinot Noir”? No, you have not—unless you are that celebrity’s agent or own a marketing company.

2. Celebrity wines are almost always overpriced relative to the quality of...